Error analysis of transient model of single-phase earth fault

The simulation accuracy of models is the basic of power system analysis, calculation, protection and control and verification of algorithm. And the present evaluation methods can not satisfy requires of analysis. The amplitude, frequency, phase and attenuation factor of the main resonant component are used for evaluation index in this paper. Combined with the evaluation index, prony algorithm is used to extract the relevant parameters. Finally, the simulations verify the accuracy of prony algorithm in signal analysis and the feasibility of evaluation system of transient model.